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Poly(2,6-diphenylphenylene oxide) is a low bleeding material with a low level of impurities, and has a high thermal stability (up to 350 °C). Before use poly(2,6-diphenylphenylene oxide) should be thermally conditioned with a high purity gas at elevated temperatures to remove any residual components.
Diphenyl ether is the organic compound with the formula (C 6 H 5) 2 O. It is a colorless, low-melting solid. It is a colorless, low-melting solid. This, the simplest diaryl ether , has a variety of niche applications.
Meta substitution of the aryl rings in these materials is most common and often desired. Longer chain analogues with up to 10 benzene rings are also known. The simplest member of the phenyl ether family is diphenyl ether (DPE), also called diphenyl oxide, the structure of which is provided in Figure 4. Low molecular weight polyphenyl ethers and ...
9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) is an organophosphorus compound that is used to produce fire retardants. From the chemistry perspective, it is a derivative of hypophosphorous acid as well as a derivative of phenanthrene. The reactivity of the P-H center allows for the conjugation of DOPO to many monomers.
Polybrominated diphenyl ethers or PBDEs, are a class of organobromine compounds that are used as flame retardants. Like other brominated flame retardants , PBDEs have been used in a wide array of products, including building materials, electronics, furnishings, motor vehicles, airplanes, plastics, polyurethane foams, [ 1 ] and textiles.
Poly(p-phenylene oxide) (PPO), poly(p-phenylene ether) (PPE), poly(oxy-2,6-dimethyl-1,4-phenylene), often referred to simply as polyphenylene oxide, is a high-temperature thermoplastic with the general formula (C 8 H 8 O) n. It is rarely used in its pure form due to difficulties in processing.
In an investigation carried out by the WWF, "the brominated flame retardant chemical (PBDE 153), which is a component of the penta- and octa- brominated diphenyl ether flame retardant products" was found in all blood samples of 14 ministers of health and environment of 13 European Union countries.
Condensation products from propenal and pentaerythritol were first described in 1950. [4] [5] The synthesis is carried using a general synthesis method for acetals at acid pH (pH 3-5) by reacting an alcohol with an excess of aldehyde, which is stabilized with hydroquinone in the case of propenal, which tends to polymerize at elevated temperature.